Under car fuel line mount retainers - How To?

[SJ]

I'm thinking of cleaning and painting, with Por 15, the fuel lines that sit
in the rubber mounts under the car . . .before they rust thru and leak.

I want to take apart these fuel line retainers . . .those rubber thingies
with the stainless steel wraparound fastener.

I took a couple apart on my 4k, but was never able to put them back together
again. The rubber exerted too much tension to get the steel ends to engage.

Is there a special tool or trick to get those closed and locked again?


SJ
85 Dodge PU, D-250, 318, auto
85 Audi 4k - - sold but still on the road
88 Audi 5kq
90 Audi 100q